In reply to Ni Nie's request: The best source of Treponema pallidum control tissue used to be necrotic liver from necropsies of syphilitic stillbirths. These were only 25 years in the past when I was a pathology resident in the 1960s. Possibly some of this material is still around. As congenital syphilis returns, there might be such material available today - one such case could supply the world for years, after all.
Mycobacterium tuberculosis control tissue can be obtained from necropsies on monkeys with tuberculosis, most commonly rhesus macaques in India. Bob Richmond Maryville TN _______________________________________________ Histonet mailing list Histonet@lists.utsouthwestern.edu http://lists.utsouthwestern.edu/mailman/listinfo/histonet
